Index: dwpcie.c
===================================================================
RCS file: /cvs/src/sys/dev/fdt/dwpcie.c,v
retrieving revision 1.43
diff -u -p -r1.43 dwpcie.c
--- dwpcie.c	30 Mar 2023 20:07:49 -0000	1.43
+++ dwpcie.c	4 Apr 2023 00:57:41 -0000
@@ -1311,6 +1311,12 @@ dwpcie_rk3568_init(struct dwpcie_softc *
 	bus_space_write_4(sc->sc_iot, sc->sc_glue_ioh, PCIE_CLIENT_GENERAL_CON,
 	    PCIE_CLIENT_LINK_REQ_RST_GRT | PCIE_CLIENT_APP_LTSSM_ENABLE);
 
+	if (OF_getpropint(sc->sc_node, "max-link-speed", 1) >= 2) {
+		uint32_t reg = HREAD4(sc, PCIE_LINK_WIDTH_SPEED_CTRL);
+		reg |= PCIE_LINK_WIDTH_SPEED_CTRL_CHANGE;
+		HWRITE4(sc, PCIE_LINK_WIDTH_SPEED_CTRL, reg);
+	}
+
 	/*
 	 * PERST# must remain asserted for at least 100us after the
 	 * reference clock becomes stable.  But also has to remain